2 * Copyright 2012 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #include <core/option.h>
27 #include <subdev/top.h>
30 nvkm_mc_unk260(struct nvkm_device *device, u32 data)
32 struct nvkm_mc *mc = device->mc;
33 if (likely(mc) && mc->func->unk260)
34 mc->func->unk260(mc, data);
38 nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx, bool en)
40 struct nvkm_mc *mc = device->mc;
41 const struct nvkm_mc_map *map;
42 if (likely(mc) && mc->func->intr_mask) {
43 u32 mask = nvkm_top_intr_mask(device, devidx);
44 for (map = mc->func->intr; !mask && map->stat; map++) {
45 if (map->unit == devidx)
48 mc->func->intr_mask(mc, mask, en ? mask : 0);
53 nvkm_mc_intr_unarm(struct nvkm_device *device)
55 struct nvkm_mc *mc = device->mc;
57 mc->func->intr_unarm(mc);
61 nvkm_mc_intr_rearm(struct nvkm_device *device)
63 struct nvkm_mc *mc = device->mc;
65 mc->func->intr_rearm(mc);
69 nvkm_mc_intr_stat(struct nvkm_mc *mc)
71 u32 intr = mc->func->intr_stat(mc);
72 if (WARN_ON_ONCE(intr == 0xffffffff))
73 intr = 0; /* likely fallen off the bus */
78 nvkm_mc_intr(struct nvkm_device *device, bool *handled)
80 struct nvkm_mc *mc = device->mc;
81 struct nvkm_subdev *subdev;
82 const struct nvkm_mc_map *map;
89 intr = nvkm_mc_intr_stat(mc);
90 stat = nvkm_top_intr(device, intr, &subdevs);
92 enum nvkm_devidx subidx = __ffs64(subdevs);
93 subdev = nvkm_device_subdev(device, subidx);
95 nvkm_subdev_intr(subdev);
96 subdevs &= ~BIT_ULL(subidx);
99 for (map = mc->func->intr; map->stat; map++) {
100 if (intr & map->stat) {
101 subdev = nvkm_device_subdev(device, map->unit);
103 nvkm_subdev_intr(subdev);
109 nvkm_error(&mc->subdev, "intr %08x\n", stat);
110 *handled = intr != 0;
114 nvkm_mc_reset_mask(struct nvkm_device *device, bool isauto,
115 enum nvkm_devidx devidx)
117 struct nvkm_mc *mc = device->mc;
118 const struct nvkm_mc_map *map;
121 if (!(pmc_enable = nvkm_top_reset(device, devidx))) {
122 for (map = mc->func->reset; map && map->stat; map++) {
123 if (!isauto || !map->noauto) {
124 if (map->unit == devidx) {
125 pmc_enable = map->stat;
136 nvkm_mc_reset(struct nvkm_device *device, enum nvkm_devidx devidx)
138 u64 pmc_enable = nvkm_mc_reset_mask(device, true, devidx);
140 nvkm_mask(device, 0x000200, pmc_enable, 0x00000000);
141 nvkm_mask(device, 0x000200, pmc_enable, pmc_enable);
142 nvkm_rd32(device, 0x000200);
147 nvkm_mc_disable(struct nvkm_device *device, enum nvkm_devidx devidx)
149 u64 pmc_enable = nvkm_mc_reset_mask(device, false, devidx);
151 nvkm_mask(device, 0x000200, pmc_enable, 0x00000000);
155 nvkm_mc_enable(struct nvkm_device *device, enum nvkm_devidx devidx)
157 u64 pmc_enable = nvkm_mc_reset_mask(device, false, devidx);
159 nvkm_mask(device, 0x000200, pmc_enable, pmc_enable);
160 nvkm_rd32(device, 0x000200);
165 nvkm_mc_fini(struct nvkm_subdev *subdev, bool suspend)
167 nvkm_mc_intr_unarm(subdev->device);
172 nvkm_mc_init(struct nvkm_subdev *subdev)
174 struct nvkm_mc *mc = nvkm_mc(subdev);
177 nvkm_mc_intr_rearm(subdev->device);
182 nvkm_mc_dtor(struct nvkm_subdev *subdev)
184 return nvkm_mc(subdev);
187 static const struct nvkm_subdev_func
189 .dtor = nvkm_mc_dtor,
190 .init = nvkm_mc_init,
191 .fini = nvkm_mc_fini,
195 nvkm_mc_ctor(const struct nvkm_mc_func *func, struct nvkm_device *device,
196 int index, struct nvkm_mc *mc)
198 nvkm_subdev_ctor(&nvkm_mc, device, index, &mc->subdev);
203 nvkm_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
204 int index, struct nvkm_mc **pmc)
207 if (!(mc = *pmc = kzalloc(sizeof(*mc), GFP_KERNEL)))
209 nvkm_mc_ctor(func, device, index, *pmc);